BFT算法可以作为Pow算法的第二代区块链技术核心去布局了。看不懂这个，你根本不懂区块链！！！ 这个行业充满着蹩脚的二手的入门者。
区块链必然会死掉99.999%的创业项目！！！
这个行业二手的人太多了。！！！！1
Blockchain 1.0: Nakamoto Era.
↑ Proof-of-work also serves as Sybil prevention (“Permissionless”)
↑ Graceful safety degradation
↑ Loose membership knowledge
↓ Proof-of-work wastes a lot of energy!
○ As of 2018: one Austria, two Denmarks, or three Irelands
↓ Extremely low capacity (throughput as low as ~3 TPS)
↓ Extremely long confirmation time (> 1 hour)
↓ Poor efficiency in safety (compared to Blockchain 2.0)


Blockchain 2.0: PBFT — Resurrect the Pharaoh.
↑ Very fast when the network is small
↑ Deterministic safety (100% safe)
↑ A long line of research
↓ Cannot scale easily: the “leader/coordinator” dilemma
○ Randomized BFT approaches are even worse
↓ Quorum-based: 100% accurate knowledge of all participants
↓ Hard limit on the Byzantine adversaries
↓ Many are very complicated